#define _CRT_SECURE_NO_WARNINGS 1
class MedianFinder {
public:
    /** initialize your data structure here. */
    priority_queue<int>left;
    priority_queue<int, vector<int>, greater<int>>right;

    MedianFinder() {

    }

    void addNum(int num) {
        if (left.size() == right.size())
        {
            if (left.empty() || num <= left.top())
            {
                left.push(num);
            }
            else
            {
                right.push(num);
                left.push(right.top());
                right.pop();
            }
        }

        else
        {
            if (num <= left.top())
            {
                left.push(num);
                right.push(left.top());
                left.pop();
            }
            else
            {
                right.push(num);
            }
        }
    }

    double findMedian() {
        if (left.size() == right.size()) return (left.top() + right.top()) / 2.0;
        else return left.top();
    }
};

/**
 * Your MedianFinder object will be instantiated and called as such:
 * MedianFinder* obj = new MedianFinder();
 * obj->addNum(num);
 * double param_2 = obj->findMedian();
 */